Evidence for amorphization of a metallic alloy by ion electronic energy loss

Audouard, Alain; Balanzat, E.; Bouffard, S.; Jousset, J. C.; Chamberod, A.; Dunlop, A.; Lesueur, D.; Fuchs, G.; Spohr, R.; Vetter, J.; Thomé, L.

doi:10.1103/physrevlett.65.875

Cited by 107 publications

(34 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It was also possible to image the size of the impacts and surface deformations using transmission electron microscopy [52] and scanning tunneling microscopy [54] in amorphous alloys irradiated with GeV Pb or U ions. The sizes of these surface features are found to be in perfect agreement with the diameters of the disordered cylinders that were earlier deduced from phenomenological approaches [55].…”

Section: Anisotropic Growth Of Amorphous Metallic Alloyssupporting

confidence: 76%

“…Going now to metallic alloys, amorphous latent tracks were observed for the first time in intermetallic alloys, such as NiZr2 [8], NiTi [9] and Ni 3 B [10]. The threshold for latent track creation is much higher than in insulators (now 40 keV/nm), but here again an evolution from discontinuous droplets to continuous cylindrical damage is observed as (dE/dx) e increases.…”

Section: Damage Creation In the Bulk Of Me Targets 211 Creation Ofmentioning

confidence: 81%

See 1 more Smart Citation

Materials Modifications with Cluster Beams: Bulk and Surface Modification

Dunlop

1999

Acta Phys. Pol. A

Self Cite

View full text Add to dashboard Cite

It is now well accepted that electronic excitation and ionization arising from the slowing down of swift heavy ions can lead to structural modifications in some metallic targets as it has been known for a long time in insulators. A rapid overview of some results obtained after GeV monoatomic heavy ion irradiations will be given. It will then be shown that new specific effects take place during irradiations with cluster ions. The projectiles used are energetic cluster beams: 10 to 40 MeV Au4 or C60 ions. The rates of linear energy deposition in electronic excitation are close for GeV monoatomic and for 10 MeV cluster ions, but the cluster ions have characteristic velocities which are one order of magnitude smaller than those of monoatomic ions. This leads to a strong spatial localization of the deposited energy during the slowing down process. The density of deposited energy can then reach values as high as a few 100 eV/atom. This very high density of energy deposited in the electronic system of the targets can lead to spectacular structural modifications: generation in the vicinity of the ion trajectories of isolated or agglomerated point defects, new crystalline phases, amorphized regions... After an overview of such damage induced in bulk metals, semiconductors, and insulators, we will discuss surface damage, consisting in the formation of bumps, craters, "lava-flows" on the target surface.

show abstract

Section: Anisotropic Growth Of Amorphous Metallic Alloyssupporting

confidence: 76%

Section: Damage Creation In the Bulk Of Me Targets 211 Creation Ofmentioning

confidence: 81%

Materials Modifications with Cluster Beams: Bulk and Surface Modification

Dunlop

1999

Acta Phys. Pol. A

Self Cite

View full text Add to dashboard Cite

show abstract

“…The changes in the materials depend on the irradiation conditions, such as ion energy, irradiation temperature, irradiation angle and the corresponding projected range [1]. Metallic glasses have been found to be very sensitive to the effects induced by electronic energy loss S e of swift heavy ions [1]. In metallic materials, phase transformation [2,3] and damage creation [3,4] have been observed as a result of an electronic energy loss introduced by ion irradiation.…”

Section: Introductionmentioning

confidence: 98%

“…Ion beam irradiation has been found to induce non-equilibrium states in matter. The changes in the materials depend on the irradiation conditions, such as ion energy, irradiation temperature, irradiation angle and the corresponding projected range [1]. Metallic glasses have been found to be very sensitive to the effects induced by electronic energy loss S e of swift heavy ions [1].…”

Section: Introductionmentioning

confidence: 99%

Mössbauer study of ferromagnetic metallic glasses irradiated by swift heavy ions at temperatures 100 and 300 K

2008

View full text Add to dashboard Cite

The effect of swift heavy ion irradiation on ferromagnetic metallic glasses Fe 40 Ni 38 Mo 4 B 18 and Fe 78 Si 9 B 13 has been studied. The ion beams used are 100 MeV 127 I and 180 MeV 197 Au. The specimens were irradiated at fluences ranging from 3 × 10 12 to 1.5 × 10 14 ions/cm 2 . The irradiations have been carried out at temperatures 100 and 300 K. The magnetic moments are sensitive towards the irradiation conditions such as irradiation temperature and stopping power of incident ion beam. The irradiation-induced effects have been monitored, by using Mössbauer spectroscopy. The modifications in magnetic anisotropy and hyperfine magnetic field distributions, as an effect of different irradiation temperature as well as different stopping power have been discussed. After irradiation, all the samples remain amorphous and magnetic anisotropy considerably changes from its original in-plane direction. The results show enhancement in magnetic anisotropy in the specimen irradiated at 100 K, as compared to that of irradiated at 300 K. It is expected that at low temperature, the stresses produced in the material would remain un-annealed, compared to the samples irradiated at room temperature and therefore, the modification in magnetic anisotropy would be enhanced. A distribution of hyperfine magnetic field, of the samples irradiated at low temperature, show a small but distinct peak at ∼ 11 Tesla, indicating Fe-B pairing.Keywords Swift heavy ion irradiation · Ferromagnetic metallic glass · Magnetic anisotropy · Mössbauer spectroscopy PACS 61.80-x · 75.30.Gw · 75.50.Kj · 76.80+y

show abstract

“…Swift heavy ions such as those produced by GANIL (Grand Accélérateur d'Ions Lourds, Caen-France) have an energy of several MeV/u. Passing through the matter, they deposit the most part of their energy through inelastic collisions with the target electrons inducing for example amorphisation [4][5][6], recrystallisation [7] or phase change [8][9][10][11]. The spatial distribution of this energy deposition strongly depends on the ion velocity and has been theoretically studied: the energy density deposited near the ion path is all the higher as the ion velocity is weak [12].…”

Section: Introductionmentioning

confidence: 99%

Influence of the crystallite size on the phase transformation of yttria irradiated with swift heavy ions

et al. 2001

View full text Add to dashboard Cite

The irradiation effects induced by swift heavy ions are now widely described in 'bulk' materials. It is shown here that the behaviour of matter under irradiation depends on its crystalline state in the sense that a given material is all the more sensitive to swift heavy ion irradiations as the mean crystallite size L is small. The present paper relates the experimental results obtained in yttrium oxide from 'in situ' X-ray diffraction measurements. Three kinds of sample have been irradiated: sintered samples (L = 1 µm), non-ground powders (L = 45 nm) and ground powders (L = 28 nm). A cubic to monoclinic phase transformation appears if the electronic energy loss of the incident particle is higher than a threshold. The comparison between the different kinds of samples reveals that this phase transformation is all the easier as the mean crystallite size of the target is weak.

show abstract

Evidence for amorphization of a metallic alloy by ion electronic energy loss

Cited by 107 publications

References 14 publications

Materials Modifications with Cluster Beams: Bulk and Surface Modification

Materials Modifications with Cluster Beams: Bulk and Surface Modification

Mössbauer study of ferromagnetic metallic glasses irradiated by swift heavy ions at temperatures 100 and 300 K

Influence of the crystallite size on the phase transformation of yttria irradiated with swift heavy ions

Contact Info

Product

Resources

About